After being officially hired, his task was to provide magical assistance to Omin Dran. In the course of casting the spell "Contact Outer Plane" to find information on where Portentia Dran's soul had gone, he went insane and was no longer able to take anything seriously.[4] After assisting them with finding the Orb of the All-Father, K'thriss was dropped off in the town of Red Larch by the Acquisitions Incorporated airship.[5]

K'thriss regained consciousness in a dirty alley next to the Dran & Courtier Inn in Red Larch. He had a note written in his own hand attached to him, a welt on his forehead, and his arcane focus was hot in his hand. He was also in possession of a golden acorn.

K'thriss worships a deity known as the Ur who he believes to be a supreme entity who operates above and beyond other gods. He wears a symbol of the Ur around his neck on a chunk of black altar rock, which also serves as his arcane focus. He found this altar somewhere in the Underdark, and was fascinated by it due to his inability to read the runes on the altar.[6] He interacts with this holy symbol each morning.[7]

K'thriss describes himself as "a seeker of knowledge" and "a conduit for a dark entity" who he can make requests of.[9] He is a curious person who is interested in things that are seen as gross or unusual, such as extreme injuries.[10] He is also unafraid to die, sometimes expressing his active wish to die to those around him.[11]

K'thriss is a submissive person. He especially defers to women, due to his upbringing in a matriarchal society.

His very first roll while playing with Acquisitions Incorporated was a natural 1 while attempting to contact an extraplanar entity.[13] This promptly caused him to go insane. K'thriss was originally played as a level 9 character, but was brought down to level 3 for The "C" Team.